
Description: Graphcool is an open-source Backend-as-a-Service to develop, deploy and scale GraphQL backends. It provides a GraphQL API out of the box with flexible data modeling and realtime subscriptions.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: emitter.io is an open-source real-time messaging service for connecting online devices. It enables real-time data streaming between clients via TCP and WebSocket protocols. emitter.io is lightweight, scalable, and optimized for speed.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API